// @media screen and (min-width:768px) {
  
  
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  max-width: 100vw;
  overflow-x: hidden; /* 紧急修复，需找到根源 */
   overflow-x: hidden; 
}

body {
  font-family: Arial, sans-serif;
  /* zoom:120% */
  margin: 0;
  padding: 0;
  min-height: 100vh;
  // justify-content: space-between;
  width: 100%;
   overflow-x: hidden; 
}

/* 顶部导航栏样式 */
.nav {
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  background-color: #4f7af2;
  color: white;
  padding: 20px;
  height: 1rem;
  width: 100%;
  position: relative; /* 关键：固定定位 */
  top: 0;    
  z-index: 999; 
}

// .nav .logo {
//   font-size: 1rem;
//   font-weight: bold;
// }
.nav .logo img{
  width: 50px;
}

.nav .navlinks {
  display: inline-flex;
  gap: 20px;
  /* padding: auto; */
}

.nav .navlinks a {
  color: white;
  text-decoration: none;
  /* margin-left: 10px; */
}

.nav .authbuttons {
  display: inline-flex;
  gap: 10px;
  
}

.nav .authbuttons button {
  padding: 5px 10px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 8px;
}

.nav .authbuttons .login {
  background-color: #4f7af2;
  color: white;
  max-width: 300px;
}

.nav .authbuttons .signup {
  background-color: red;
  color: white;
  max-width: 300px;
  
}


.tabitem {
      display: inline-flex;
      // padding: 8px 16px;
      background-color: #4f7af2;
      font-size: 10px;
      color: #fff;
      border-radius: 20px;
      cursor: pointer;
      transition: all 0.3s ease; /* 过渡动画，让变化更丝滑 */
      // font-size: 1rem;
    }
    /* 点击后的激活样式：高亮 + 轻微放大 */
    .tabitem.active {
      background-color: #fff;
      color:rgba(0, 82, 217, 1) ;
      transform: scale(1.05); 
    }

    

/* banner 区域样式 */
.banner {
  /* background-color: rgba(0, 82, 217, 1); */
  color: white;
  text-align: center;
  /* padding: 50px 20px; */
  // margin-top: 3.5rem;
  // // height: 380px;
  // border-bottom-left-radius: 50% 60%;
  //   border-bottom-right-radius: 50% 60%;
    // margin-bottom: 150px;
}

.banner h1 {
  font-size: 1.8rem;
  // margin-bottom: 10px;
}

.banner img {
//   font-size: 28px;
  /* margin-top: 100px; */
  max-width: 100%;
  width: 100%;
  height: auto; 
  // display: block;
  align-items: center;
  position: relative;
}

.banner p {
  // font-size: 1rem;
}

.banner .deviceshowcase {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.banner .deviceshowcase img {
  max-width: 1000px;
  height: auto;
  display: block;
}

/* 功能点区域样式 */
.feature {
  /* display: flex; */
  justify-content: center;
  gap: 40px;
  padding: 0 1.2rem;
}

.feature img{
  /* max-width: 100%;
  width: 100%; */
  /* height: auto; */
  // margin-top: -300px;
  align-items: center;
  max-width: 100%;
  // width: 100%;
  // display: flex;
  // position: relative;
}

 h2{
  padding: 10px;
  text-align: center;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  letter-spacing: -0.5%;
  line-height: 40px;
  font-weight: 500px;
  background: rgba(242, 243, 255, 1);
;
}

 h2 .p1{
//   padding: 50px;
  // text-align: center;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  letter-spacing: -0.5%;
  // line-height: 40px;
  color: rgba(0, 82, 217, 1);
  font-weight: 500px;
}

.corefeaturesection1 .featuredesc .p2{
//   padding: 50px;
  // text-align: center;
  // align-items: center;
  // width: 100%;
  // max-width: 1200px;
  // letter-spacing: -0.5%;
  // line-height: 40px;
  color: rgba(0, 11, 51, 1);
  font-weight: 500;
  font-size: 15px;
  
}

.corefeaturesection1{
  height: auto;
  width: 100%;
  padding: 20px;
}

.corefeaturesection2{
  height: auto;
  width: 100%;
  padding: 20px;
}

.corefeaturesection3{
  height: auto;
  width: 100%;
  padding: 20px;
}

.corefeaturesection2 .featuredesc .p2{
//   padding: 50px;
  // text-align: center;
  // align-items: center;
  // width: 100%;
  // max-width: 1200px;
  letter-spacing: -0.5%;
  // line-height: 40px;
  color: rgba(0, 11, 51, 1);
  font-weight: 500;
  font-size: 15px;
}

.corefeaturesection3 .featuredesc1 .p2{
//   padding: 50px;
  // text-align: center;
  // align-items: center;
  // width: 100%;
  // max-width: 1200px;
  letter-spacing: -0.5%;
  // line-height: 40px;
  color: rgba(0, 11, 51, 1);
  font-weight: 500;
  font-size: 15px;
}


/* 核心功能介绍区域通用样式 */
.corefeaturesection{
  // padding: 30px;
  // margin-top: 50px;
  // text-align: center;
  // align-items: center;
  // width: 100%;
}


.corefeaturesection2{
  // padding: 50px;
  // text-align: center;
  background-color: aliceblue;
}

.corefeaturesection2 .featuredesc{
  // padding: 50px;
  // text-align: center;
  // background-color: aliceblue;
  width: 100%;
}
.corefeaturesection h2 {
  /* width: 100%; */
  // padding-top: 30px;
  // margin-top: -50px;
  // height: 100px;
  // background-color: #F2F3FF;
}

.corefeature {
  display: flex;
  justify-content: center;
  align-items: center;
  // gap: 20px;
  // margin-bottom: 40px;
  // // padding: 1rem;
  width: 100%;
  padding: 10px;
}

.corefeature img {
  // max-width: 100%;
  width: 100%;
  height: 100%;
  // align-items: center;
  // text-align: center;
  // margin-left: 150px;
  // align-items: center;
  // max-width: 100%;
  // width: 300px;
  // display: inline-flex;
  // position: relative;
  // padding: auto;
}



.corefeature .featuredesc{
  // text-align: left;
  // max-width: 100%;
  // width: 100%;
  // font-weight: 500;
  // letter-spacing: -0.5px; 
  // position: relative;
  // /* display: flex; */
  // font-size: 10px;
}


.corefeature .featuredesc h5{
  text-align: left;
  width: 300px;
  color: #0052D9;
  // padding-bottom: 20px;
  // font-size: 1rem;

}

.corefeature .featuredesc .desc{
  // text-align: left;
  // max-width: 100%;
  // width: 100%;
  // font-weight: 500;
  // letter-spacing: -0.5px; 
  // position: relative;
  // /* display: flex; */
  // font-size: 10px;
}

.corefeature .featuredesc1{
  text-align: center;
  max-width: 100%;
  // font-size: 10px;
  font-weight: 500;
  letter-spacing: -0.5px; 
}

.corefeature .featuredesc1 h5{
  /* text-align: center; */
  /* width: 300px; */
  color: #0052D9;
  // padding-bottom: 20px;
  // font-size: 1rem;

}

.corefeature .featuredesc1 img{
  /* text-align: center; */
  /* width: 300px; */
  /* display: block; */
  align-items: center;
  max-width: 100%;
  display: flex;
  position: relative;
}

.corefeature .featuredesc .customfont{
  /* text-align: left;
  width: 300px;
  color: #0052D9; */
  // font-size: 16px;
  color: #000B33;
  font-weight: 500;
  // line-height: 26px;
  font: PingFang SC;
  letter-spacing: 0%;
}

.corefeature .featuredesc1 .customfont{
  /* text-align: left;
  width: 300px;
  color: #0052D9; */
  // font-size: 1rem;
  color: #000B33;
  font-weight: 500;
  // line-height: 35px;
  font: PingFang SC;
  letter-spacing: 0%;
}


.corefeature .featuredesc p{
  /* text-align: left;
  width: 300px;
  color: #0052D9; */
  font-size: 6px;
  color: rgba(0, 0, 0, 0.6);
  font-weight: 400;
  // line-height: 26px;
  font: PingFang SC;
  letter-spacing: 0%;
  // width: 100%;
}

.corefeature .featuredesc1 p{
  /* text-align: left;
  width: 300px;
  color: #0052D9; */
  // font-size: 0.8rem;
  color: rgba(0, 0, 0, 0.6);
  font-weight: 400;
  // line-height: 26px;
  font: PingFang SC;
  letter-spacing: 0%;
  font-size: 6px;

  
}

.corefeature .featuredesc1 img{
  width: 100%;
  height: 100%;
  margin: 10px;
  
}

.corefeature .featuredesc button {
  border-radius: 3px;
  // margin-top: 0px;
  padding: 5px 10px 5px 10px;
  border: none;
  border-radius: 4px;
  background-color: #0052D9;
  color: white;
  cursor: pointer;
  gap: 10px;
  display: flex;
  font-size: 6px;
}

.corefeature .featuredesc1 button {
  border-radius: 3px;
  // padding: 13px 33px 13px 33px;
  padding: 5px 10px 5px 10px;
  font-size: 6px;
  border: none;
  border-radius: 4px;
  background-color: #0052D9;
  color: white;
  cursor: pointer;
  gap: 10px;
  align-items: center;
  // margin:10px ;
  // margin-bottom: 50px;
}


.corefeature img{
  // position: relative;
  // width: 100%;
  // height: 100%;
  // display: flex;
}

/* 底部区域样式 */
.footer {
  /* background-color: #0D5BDB; */
  // color: white;
  // text-align: center;
  // align-items: center;
  // /* padding: 40px; */
  // width: 100%;
  // /* height: 300px; */
  // white-space: nowrap ;
  // font-size: 0.5rem;
  // line-height: 32px;
  // letter-spacing: 0%;
  //   border-top-left-radius: 80% 50%;
  //   border-top-right-radius: 80% 50%;
  //   font-weight: 100;
}


// }